o     Transaction Support

DBMS is responsible for providing transaction support. Transaction is an action that is used to perform some manipulation on the data stored in the database. DBMS is responsible for supporting all the required operations on the database, and also manages the transaction execution so that only the authorized and allowed actions are performed.

o     Concurrency Support

Concurrency support means to support a number of transactions to be executed simultaneously, Concurrency of transactions is managed in such a way that if two or more transaction is making certain processing on the same set of data, in that case the result of all the transactions should be correct and no information should be lost.

o     Recovery Services

Recovery services mean that in case a database gets an inconsistent state to get corrupted due to any invalid action of someone, the DBMS should be able to recover itself to a consistent state, ensuring that the data loss during the recovery process of the database remains minimum.

o     Authorization Services

The database is intended to be used by a number of users, who will perform a number of actions on the database and data stored in the database, The DBMS is used to allow or restrict different database users to interact with the database. It is the responsibility of the database to check whether a user intending to get access to database is authorized to do so or not. If the user is an authorized one than what actions can he/she perform on the data?

o     Support for Data Communication

The DBMS should also have the support for communication of the data indifferent ways. For example if the system is working for such an organization which is spread across the country and it is deployed over a number of offices throughout the country, then the DBMS should be able to communicate to the central database station. Or if the data regarding a product is to be sent to the customers worldwide it should have the facility of sending the data of the product in the form of a report or offer to its valued customers.

o     Integrity Services

Integrity means to maintain something in its truth or originality. The same concept applies to the integrity in the DBMS environment. Means the DBMS should allow the operation on the database which are real for the specific organization and it should not allow the false information or incorrect facts.

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